In 2004, Manuel de Sola?-Morales and an elite group of urban experts presented the exhibition ?Cities, Corners? to highlight the value of con- temporary urbanity at The International Forum of Cultures, in Barcelona. In this exhibition of urban settings around the world (including Times Squa- re, a Parisian cafe?, Shibuya and Piccadilly Circus, among many others), the meaning of the corner? was extended beyond its purely geometric con- dition in relation to buildings to a wider scope in which cities themselves were considered social, economic, cultural and political intersections.This book, which was sparked by the IMPAQT project, came together in our virtual classrooms, and was written and edited in the Barcelona Urbanism Laboratory is the result of this very wide collective contribution. It aims to provide a mosaic of the past, the present and the future of a vibrant hub in the central area of a global megalopolis.